MIRI Deep Imaging Survey (MIDIS) of the Hubble Ultra Deep Field

TL;DR

The MIRI Deep Imaging Survey (MIDIS) uses JWST's MIRI instrument to capture the deepest mid-infrared images of the Hubble Ultra Deep Field, enabling study of distant galaxies at unprecedented wavelengths.

Contribution

First deep, long-exposure mid-infrared imaging of the Hubble Ultra Deep Field with JWST's MIRI, providing new data for high-redshift galaxy studies.

Findings

Longest single filter JWST exposure of an extragalactic field

Deep imaging at 5.6 micrometers of the HUDF

Enhanced capability to study galaxies at z>4 and z>9

Abstract

The recently launched James Webb Space Telescope (JWST) is opening new observing windows on the distant universe. Among JWST's instruments, the Mid Infrared Instrument (MIRI) offers the unique capability of imaging observations at wavelengths $\lambda > 5\mu$m. This enables unique access to the rest frame near infra-red (NIR, $\lambda \ge 1$\mum) emission from galaxies at redshifts $z>4$ and the visual ($\lambda \gtrsim 5000$\AA) rest frame for $z>9$. We here report on the guaranteed time observations (GTO) from the MIRI European Consortium, of the Hubble Ultra Deep Field (HUDF), forming the MIRI Deep Imaging Survey (MIDIS), consisting of an on source integration time of $\sim41$ hours in the MIRI/F560W (5.6 $\mu$m) filter. To our knowledge, this constitutes the longest single filter exposure obtained with JWST of an extragalactic field as yet.